Internationale Vergleichsmessungen

	-	pH-Wert
	-	Ionenaktivität
	-	Elektrolytische Leitfähigkeit
	-	Coulometrie

• Europäisch
• International
• Zusammenarbeit

Europäische Vergleichsmessungen

EURAMET key comparison databasis

• 300 Intercomparison of definitive method for pH measurement;
  Metrologia (1996), 33:95-96
• 370 Intercomparison of primary standard measurement devices for pH.
  Metrologia (1997), 34:375-376
• 424 Intercomparison of primary standard measurement devices for pH.
  Metrologia (2000), 37:85-86
• 632 Study on electrolytic conductivity measurements
• 696 Comparison of primary measurement procedures for pH (Koordinator)
  Metrologia, 2005, 42, Tech. Suppl., 08001
• 760 pH determination of phosphate buffer by Harned cell (Koordinator)
• 843 Recommendations for the calibration and evaluation of pH on site measuring instruments
• 898 Electrolytic conductivity at pure water level
• 918 Study on the traceability of salinity measurements in seawater (Koordinator)
• 932 Electrochemical activity measurements of ions and substrates in complex matrices

Internationale Schlüsselvergleich

BIPM key comparison databasis

• CCQM-K 9 (Koordinator): pH of phosphate buffer
• CCQM-K9.1 (Koordinator): pH of phosphate buffer
• CCQM-K9.2 (Koordinator): pH of phosphate buffer
• CCQM-K 17 (Koordinator); pH of phthlate buffer; Final report: Metrologia
• CCQM-K18: pH of carbonate buffer
• CCQM-K19 (Koordinator): pH of borate buffer
• CCQM-K36a: Electrolytic conductivity
• CCQM-K36b: Electrolytic conductivity
• EUROMET.QM-K17 (Koordinator): pH of phthlate buffer
• und Pilotstudien http://www.bipm.org/eu/comittees/cc/ccqm
• CCQM-P22 Electrolytic conductivity
• CCQM-P 37 Fundamental studies of pH-standards
• CCQM-P47 Electrolytic conductivity
• CCQM-P52 pH of carbonate buffer
• CCQM-P82 pH of borate buffer (Koordinator)
• CCQM-P83 Electrolytic conductivity
• CCQM-P111 Seawater Salinity
• CCQM-P19/P19.2: Determination of the Amount-of-Substance Content of 0.01 mol/kg

Sonstiges

• International Comparison: PTB (DE), SMU(SK), UkrCSM(UA): Comparison of measurement standards for electrolytic conductivity (Pilotlabor: SMU, Slovakei, mariassy@smu.gov.sk)

Zusammenarbeit

Mitarbeit in ...

• SCOR/IAPSO WG 127 on Thermodynamics and Equation of State of Seawater
• IUPAC:WG on pH Comparable pH measurements by metrological traceability